Bias-cutting machine



July 12,1927.

J. W. BRUNDAGE BIAS CUTTING MACHINE Filed June, 21, 1926 7 Sheets-Sheetl JizmesT V. B7:

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u y J.'W. BRUNDAGE BIAS CUTTING MACHINE Filed June 21, 1926 7Sheets-Sheet 2 James wflzizndagd July 12, 1927.

J. W. BRUNDAGE B'IAS CUTTING MACHINE Filed June 21, 1926 v Sheets-Sheet3 amulet:

-Zames WBcundage,

July 12, 1927.

J. W. BRUNDAGE BIAS CUTTING MACHINE v Sheets-Sh't 4 iled June 2 T926.

Qwwntor:

Jauneas' .wflirunakye, a".

July 12, 1927.

J. y'v. BRUNDAGE BIAS CUTTING MACHINE Filed June/21, 1926 Sheets-SheetPatented July 12, 1927.

uni-ran star *irAMEs w. :BRUNDAGE, or AKRON, 01110, ASSIGNOR 'roTHE-MILLER RUBBER corp rA nY, or AKRON, 01110, A oonronATIon oronro.

My. present invention relates toimprove.- ments in bias cutting machinesof the type in which the material to be cut is led in a continuous webaround a'vrotating platenroll and subjected to the action of an endlessseries of vcutters moving the roll in synchronism therewith, therbiascuts being the component of the movement of the fabric" (or platen-roll)and the movementof the cutters v The. invention aims to provide variousimp'rovedfeatures of construction which will be'apparent from thefollowing description.

The invention includes the said novel features and arrangement/andconstructionv of parts hereinafter as constituting my present, inventionbeing setfOrth in and defined 'by thejclaims: ap

pended hereto.- -r a v a My said invention isillust'rated in theaccompanyingdrawings in which' Figure. 1 is a' side elevation of thejmachinet K- r ,4 ,Figure 2 is a plan View. Figure 3is anend, elevation.Figure 4 is an enlarged longitudinal vertical section with the righthand portion-of the table-etebroken away, I l Figure 5 is 'avertical'transverse section substantiallyon line 5+5 ofFigure 2.1 FigureG is a transverse vertical section takenon the line of the platen roll,1 Figure 7 is an enlarged sectional detail show1ng.the platen cuttersand-cutter guide and thepresserrolls conventionally-e V- 2 Figure 8 is aplan view-of the same partly insection. f m y v Figure 9 is a; detailface view of one of the cutters, andi Y J Figures 10, 1 1 and 12aredetail views of ;the scraper and blower device. 7

Referring by reference characters to these drawings the letter A whichmay be fed to .the

suitable source of supply, roll (not shown), the top. of the machine.During its passage it is supported by idle rollers land 2 jour naled insuitable bearings on themain frame. From the latter roll the fabricpasses diagonally downward over a driven spreader roll 3 which. spreads:the fabric laterally and such as a stock Application filed June 21,1926. Serial No, 117,454. 7

lengthwise of 'ure 4); -The spreader described, what I; regard,

roll or cylinder,

point directly e chine at which 'point' the; fabric "on eitherdesignates the fabric machine fromvany loop and which passes, across"arns-ou'rrine MACHINE;

takes out any wrinkles, the spreader roll being provided, for thispurpose, with helical ridges extending reversely from the center 55.towards opposite ends as shown in Figure 2. From the spreader roll?) thefabric passes in a zigzag path successively around driventensionrrol1s'4, 5 and 6,";(see Fig f rollis driven faster on than thetravel of the fabric, while the ten- 'sion rolls are driven at-a slower'speedthan the fabric, by means hereinafter described.

From the tension roll 6 the fabricpasses to and arou'ndilthe platen drum7 Roll 6' 1s located opposite the rear'breast of the, platen roll orcylinder (right-rhand side Figure 4:), or with its aXis in substantiallyhorizontal alinement'with the axis of the platen and as the fabricleaves" platen roll at the bottom thereof this assures contact "ofrthe'fabric with the -platen" roll 'forCmore than 135 ofits circumference-hea fore it comes to the cutting p'ointwhich is at the front breast-of theplaten width notless than'the width of the fabric holds the'cutstrips-in contact with the sur- 1 face 'of the platen roll until theyreacha neath the axis of the platen roll at which point the beltconveyor leaves the platen h over the table to the delivery end of themathe/belt passes around Presser rollers 11 and- 12 are preventing anyslipping or displacement of '90,

sideofthe cuts. 3

I These rollersare journal'edon shaftscarthe roll 9'. c 7

provided for ried by leverv arms 13 'and 14L andarepressed 3 towardsvtheplaten "roll by springs-13 and l acting on arms 13" and 149?.

' The'rol-l'll is used as a'supp'ort for the of the belt conveyor atthis point,-.the pressure of-the rollbeing imparted to the fabricthrough the beltQ' The return por-i tion of the belt between trollers 9and ll 9 passes around an adjustable tensionroll 15 by which its tensionmaybe regulated.

The machine is driven by a motor' (ele'c- :tric) :16 through a variablespeed drivel? roll or sub- 75 a stantially opposite the tension roll 6.i a

roll; and conveys the outstrips,

I so

jure,

of any approved type (both being conventionallyr shown) power beingtransmitted from the latter to .wheel'18 by the belt 18 driven by pulley17 of the variable speed mechanism. The belt gearing above described isshown conventionally in Figure 3 and may beof any desired type as for eXam-' Wheel 18 is loose on shaft 19 and to be coupled thereto flat'orVbelt or chain and sprocket.

is adapted by clutch 20 preferably of the friction type operated byshifted if fork 20 through the intermediary of lever 20 and rod 20?extending to a point convenient ,tOrtllQ. operator stationed adjacenttable 8. 1 V

1A worm 22 keyed meshes with a worm gear 24 fast on the' to shaft 19(Figure 6) .platen roll shaft 7 andthereby drives the platenroll 7. I IA second worm 21 (Figure 5) is slidably mounted on a splined portion ofshaft 19 and meshes. with a worm Wheel 23 fast on-a vertical shaft 25which in turn carries the sprocket-26 whichedrives the cutter chains 1hereinafter more particularly described and shown 1n detall inFigure 8.

' Thevertical shaft 25,WO1'111 gem-123, and

v housing t o a slide memb worm 21 are all carried by or mounted in a eror carriage 21 slidably 1 .1 nount ed in the frame'of the machine. (Seealso Figure .5.)

the gpposite side 'of themachine is a- 's' mi'lar sh zon-ta'llyprojecting spaced apart portions 21 mg carriage 21 which has horiwhich'carry the idle sprocket forthe cutter chain ashereinafter described.

The. carriages or like members 21 and 21 are tied together and rigidlyconnected by .a cross member v21 which .may be formed I integrallytherewith.

I J ournaled in the frame of the machine and ;.ex tending transverselythereof from side is-a'shaft, 29 (Figure which carries side to fast on.the extremities thereof hand wheels ,30 and 30. :1 V -.,;:.This shaftalso has "fast thereon worms 31' and 31 the former'of' which meshes witha pair of Worm wheels 32 and 33 and the I latter with similar wormwheels 34 and 35. I I WVoi-m wheels 32and 33 are fast on upper and lowershafts.

36 and '37 (Figure 4) which 'are journaled in the machine frame so-as-to=be held against-axial movement,and

, threaded openings worm wheels .3 shafts. V a These four shaftsportions which I and 35 are .fast on similar 3 have screw threadedengage correspondingly in the I cated by dottedlines at 36 rand 37 v(Fig By operating either hand wheel 30 or 30 according to which isoperator the carriages Wlll be moved towards i "o'r;;fron1.. the platenroll accordingto the most convenient to the or it may be moved the,carriage 21 or carriage 27 Figure: 1) secured.

secured. Plate members 1 blocks are slidably guided carriages,indidirection of rotation, and thus the chain shaped to form a guide wayin which is mounted a carriage 38 to have a rectilinear motiontransversely of the machine. This carriage has a-bifurcated portion'mwhich is ournaled the idle sprocket 39 which is iI1 alinement with andcorresponds to the drive sprocket 26. on the opposite side of themachine (Figure 5). the cutters are connected (Figure 8) passes aroundthese'two sprockets. The carriage or. slide member '38 hasa threadedbore which is engaged by a'screw'sliaft- 43: journaled in The chain 40to which the frame of carriage 21 and held against axial movementtherein, which shaft hasfast thereon a sprocket 44' connected .bychain-45 with sprocket 46' fast on shaft 47. -This shaft is providedwith carriage 38 maybe moved to adjust the tensionon thebelt as desired.v I I I I "The cutters are indicated-j at 41 (Figures to 9) and they arejournaled in'carrier's at hand wheel 47 by whic h it may be rotated andWherebythe 42 slidably guided onbolts or headed studs 43 and normallythe studs betweenrthe carriers 42 an'dthe pressed outward ytow'ards theI heads by'hel-ical springs 44 surrounding plate members 45 'to whichthe studs are secured'to carrier'blocks 146* by means of bolts 47passing through slots 4 'and tapped into the carrier blocks 46 and thesecarrier by the carriage structure 21 21, 21 heretofore dcto. saidcarriage structure upper and lower track members 48. Figure 4' havingopposed their overhangguide grooves orchannels in are adjustably scribedas clearly shown in Figures 4 and 7. Preferably this is accomplished bysecuring ing opposed faces which receive the? edges 3 of the carrierblocks 46*. The inner walls hardened wear plates48 (Figure 7);

of the grooves may be" formed by separate A link belt'of standardconstruction may be used and the carriersblo'cks 46* secured thereto byL shaped clips 46 bolted to the carrier blocks and'havin'g their angularpor- 'tions apertured toreceive the link pins of thechain.

The shaft of roll 5 is driven from the platen roll shaft by sprocketchain 50 (F igure 4) passingaround suitable sprockets on the shafts ofrolls 5 I I and '7, while rolls 4 and dare driven from said roll 5 byspur' gears as clearlyshown. 1n said'figure. -Roll 3l-is I drivenfromroll 6 throughsprocket chain 51..

Presser roll 12 is driven from the platen rollby sprocket gearing 2',spur gearing 53 and sprocket. gearing "54, the latter being indicated indotted lines. Presser roll 11 is driven in a similar manner as will beso clearly evident from the drawing as to: render further descriptionunnecessary- Figured shows in detail theconstruction of theplaten rollwhich comprises a hollow cylindrical shell of soft steel having beveledends 7" which are supported by circular heads 7 keyed to the shaft 7.

The heads have slightly flared outer edges and they are drawn towardseach other to bind the cylinder thereon by tie rods/3 Iiiy thisbevelededge arrangement as the cutters approach the end of the shellthey ride up the incline thereof without damage to either. Ordinarilythe fabric will leave the platen roll at the bottom as'indi-cated inFigure 4, but to insure its removal in case of adherence I provide ascraper bar carried by a hollow bar 56 to the interior of which airunder pressure is conducted from any suitable source (not shown). 'Thescraper bar is provided with a multiplicity of passages 55*: (Figures 10and 12) leading from the interior bore of bar 56 to the edge of" thescraper bar and by the combined action of the said edge and air jets anyadhering fabric Will be removed without injury thereto. 1

An important feature of, the present invention is the location of theendless chain 7 of cutters at the breast of the platen roll, or'midwayof the height thereof, as by this arrangement the force of gravity.assists the point of fabric produced by the bias cut in adhering to orlying against the face of the platen until it is engaged by the belt 10as in rapid operat-ion'there would otherwise'be a tendency for thepoint. to double back on itself which would be seriously detrimental.

Furthermore by this arrangement the cutting is always in plain sightofzthe operator and disconnecting at the master link which a may becolored for indication.

a chain having differently spaced cutters The end of may then be'connec-tedto the master link and the machine. drive operatedsufficiently to pass the old chain out and the new chain what I claim isi in and after the ends ofthe latter have been connected the mechanismmay be quickly restored to operating condition,

Having tius' described 1. In a machineof the classd escribedla platenroll, means for drivingcthe same, a carrier mounted to move towards andfrom the roll in a horizontal plane substantially coincident-with theaxis of the roll, an. end- I 7 less chainguided by said carrier andhaving spaced apart cutters, and means for driving said chain in unisonwith the roll. Y

2. In a machineof-the class described, a platen roll with means fordriving it, a

' :my invention,

carrier mounted to move towards and from the roll and having endlessopposed guide grooves, carrier blocks having their edges 1 guidedinsa-idgrooves, an'endless chain connectl-ng SitlCl carnerblocks, meansfor driving said chain in unison with the platen roll, '7 and cuttersyieldably carried by said carrier blocks. 7 1

Ina machine of the classfdescribed, a

mainframe, a platen roll journaled therein with means for driving it, acutter guide shdably mounted in said frame to move towards and from theidle sprockets carried by said cutter guide, an endless chain passingaround said sprockets, cutter blocks slidably guided by said guide andconnected to said chain, cutters yieldably carried by said blocks, andmeans for moving said guide towards and from the platen.

platen roll, driving and 4:. In a machine of the class described, a

main frame, a platen roll journaled therein with means slidably mountedin said frame to ,move

and idle sprockets carried by said. cutter guide, an endless chainpassing around said sprockets, cutter blocks slidably guided by saidguide and connected to said chain,-cut-- ters yieldably carried by saidblocks, and means for moving said guide towards and from the platen, andmeans for moving said idle sprocket towards and from the drivingsprocket.

5. In a machine ofthe classdescribed,as

for driving it, a cutter guide I j towards and from the platen roll,drivingplaten roll with, means for rotatingit, an endless series ofspaced connected cutters arranged to operate against the breast of theroll, means for guiding the web to be cut to said roll, and presserrolls coacting with said platen roll above and'below the cutters andclosely adjacent thereto, and an endless conveyor belt passing aroundthe lower presser roll and beneaththe lower portion of the platenroll,-and diverging from said lower portion. 1

6. In a machine of the class described, a platen roll with means for.rotatlngit, an

endless series of spaced connected cutters 7 from said lower portion,and a scraper co acting-with SELlCl platen roll -ad acent the pointofdeparture of the belt and having air passages leading to its edge withmeans "for sn )1 in air. under oressure thereto.

7, In a machine of the character dex scribed, a 'i'otatable, platenroll'with means for driving v t, anendless series of spaced apartconnected cutters disposed to operate against'the breast of the roll;lengthwise thereof with means for no-ving said fcutters ,iniunison withthe rotation of the roll, a

group of. tensionrolls-adjacent the breast of the rollon the oppositeside of the cattersaround whlch the web passes in a 21g zag path on itsway to the platen roll, a spreader roll over which the 'web passes onits way to the tension rolls, and means-for driving the tension rolls ata slower speed than-the platen roll and the, spreader roll; at a fasterspeed. i

8. In a machine of the class described, a main frame, a platenrollojournaled therein, a drive shaft extending lengthwise of the frameand journaled therein, means for op:

erating said drive shaft, gearing connecting said platen roll with saiddrive shaft, a carriage slidably mounted in the frame to move towardsand from the breast of the platen roll, endless series of spacedconnected eutters guided by said; carriageand arranged to" operateagainst the, breast, of the roll,

means for, operating said cutters including a driving wheel slidablykeyed on said car- ;riage towards and fronrthef roll ,and means forguiding a webto be cutto and around I the platen roll. v a

In testimony whereof I aflix my slgnature.

JAMEs W1 BRuNnAeE.

